Banco Central de São Tomé e Príncipe Exchange Rates Today & Official API

Official Banco Central de São Tomé e Príncipe rates for 11 Nov 2026: 1 USD = 21.848 STN, 1 GBP = 29.326 STN (1 EUR fixed at 24.5 STN). All 14 currencies published, history back to 2026, CSV/Excel download. Free JSON API for tax, audits, and compliant invoicing.

By Madhushan, Founder & Lead Developer · Updated 11 Nov 2026

Banco Central de São Tomé e Príncipe official daily exchange rates as JSON: 14 currencies against the STN, history back to 2026. Latest table on every plan. Get your API key.

ptBanco Central de São Tomé e Príncipe

About Banco Central de São Tomé e Príncipe

Banco Central de São Tomé e Príncipe publishes a daily exchange bulletin for the dobra (STN): buying, selling and mid rates for 14 currencies and the SDR. The dobra has been pegged to the euro at 24.5 since 2010, so the euro line is fixed and the dollar, pound, yen, CFA franc, real and the rest move with the euro's crosses. The bulletin is the official rate for customs and tax purposes in São Tomé; the bank publishes the table in force only, so our archive builds forward from September 2026.

• Official website: www.bcstp.st
• Official rate publication: Boletim de Câmbio

Quick start

One request for the pair you need — USD to STN at the official Banco Central de São Tomé e Príncipe rate:

curl "https://allratestoday.com/api/v1/central-bank/bcstp/latest?source=USD&target=STN" \
  -H "Authorization: Bearer art_live_your_key"

What comes back — a real response built from the table in force (2026-11-11):

{
  "bank": "bcstp",
  "name": "Banco Central de São Tomé e Príncipe",
  "rate_date": "2026-11-11",
  "source": "USD",
  "target": "STN",
  "rate": 21.8477,
  "rate_type": "buy",
  "derived": false,
  "method": "published",
  "age_days": 0,
  "stale": false,
  "cadence": "daily",
  "available_by_utc": "12:25",
  "usually_at_utc": "10:10",
  "publisher_timezone": "Africa/Sao_Tome",
  "usually_at_local": "10:10",
  "disclaimer": "Official rates as published by the named central bank. On weekends/holidays the most recent published rate_date is returned."
}

Or the bank's full published table:

curl "https://allratestoday.com/api/v1/central-bank/bcstp/latest" \
  -H "Authorization: Bearer art_live_your_key"

The full-table response has the same envelope with every published row (first rows shown):

{
  "bank": "bcstp",
  "name": "Banco Central de São Tomé e Príncipe",
  "rate_date": "2026-11-11",
  "age_days": 0,
  "stale": false,
  "cadence": "daily",
  "available_by_utc": "12:25",
  "usually_at_utc": "10:10",
  "publisher_timezone": "Africa/Sao_Tome",
  "usually_at_local": "10:10",
  "rates": [
    {"base":"BRL","quote":"STN","type":"buy","value":3.9353},
    {"base":"BRL","quote":"STN","type":"middle","value":3.9648},
    {"base":"BRL","quote":"STN","type":"sell","value":3.9943},
    {"base":"CAD","quote":"STN","type":"buy","value":15.4555},
    … 38 more rows
  ],
  "disclaimer": "Official rates as published by the named central bank. On weekends/holidays the most recent published rate_date is returned."
}

On paid plans, any historical date or a time series:

curl "https://allratestoday.com/api/v1/central-bank/bcstp/history?source=USD&target=STN&from=2025-01-01" \
  -H "Authorization: Bearer art_live_your_key"

Latest published rates (2026-11-11)

Below is the current table from Banco Central de São Tomé e Príncipe, unmodified — what a call to /latest returns right now, with values STN per 1 unit of each currency:

Usually in the API by 12:25 UTC. Measured over the last 9 publications (most often at 10:10 UTC). Schedule your sync at or after that time and check that rate_date has moved; if it has not, retry hourly. API responses carry the same figure as available_by_utc. Local publication time: about 10:10 GMT (Africa/Sao_Tome), Banco Central de São Tomé e Príncipe's own clock.

Download this table: Excel (.xlsx) CSV (paid plan required)

Base	Quote	Type	Rate
BRL	STN	buy	3.9353
BRL	STN	middle	3.9648
BRL	STN	sell	3.9943
CAD	STN	buy	15.4555
CAD	STN	middle	15.5714
CAD	STN	sell	15.6873
CHF	STN	buy	26.6218
CHF	STN	middle	26.8214
CHF	STN	sell	27.0211
CNY	STN	buy	3.2754
CNY	STN	middle	3.2999
CNY	STN	sell	3.3245
DKK	STN	buy	3.2774
DKK	STN	middle	3.302
DKK	STN	sell	3.3266
EUR	STN	buy	24.5
EUR	STN	middle	24.5
EUR	STN	sell	24.5
GBP	STN	buy	29.3255
GBP	STN	middle	29.5455
GBP	STN	sell	29.7654
JPY	STN	buy	0.1381
JPY	STN	middle	0.1392
JPY	STN	sell	0.1402
NOK	STN	buy	2.3079
NOK	STN	middle	2.3253
NOK	STN	sell	2.3426
SEK	STN	buy	2.2291
SEK	STN	middle	2.2458
SEK	STN	sell	2.2625
USD	STN	buy	21.8477
USD	STN	middle	22.0115
USD	STN	sell	22.1754
XAF	STN	buy	0.0374
XAF	STN	middle	0.0376
XAF	STN	sell	0.0379
XDR	STN	buy	29.6234
XDR	STN	middle	29.6234
XDR	STN	sell	29.6234
ZAR	STN	buy	1.3325
ZAR	STN	middle	1.3425
ZAR	STN	sell	1.3525

Node.js / TypeScript client

A dedicated zero-dependency npm package wraps these endpoints — bcstp-exchange-rate:

npm · bcstp-exchange-rate GitHub · AllRates-Today/bcstp-exchange-rate

npm install bcstp-exchange-rate

import { getRate } from 'bcstp-exchange-rate';

const pair = await getRate('USD', 'STN', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date);

Zero dependencies, TypeScript types included, and it runs anywhere fetch exists — Node 18+, Bun, Deno, and edge runtimes.

Full reference — installation, all four functions, response shapes, error codes: bcstp-exchange-rate documentation.

Why use the official Banco Central de São Tomé e Príncipe rate?

When an auditor or tax office in São Tomé and Príncipe asks which rate you used, "the STN mid-market rate at 14:32" is not an answer — the official rate published by Banco Central de São Tomé e Príncipe for that date is. This API returns exactly those published figures, stamped with the bank's own rate_date; on weekends and holidays the most recent published table is returned, as compliance rules expect.

Pairs the bank doesn't print directly are resolved from its table (inverse or cross via STN) and explicitly flagged "derived": true — so what the bank printed and what was computed are never confused.

Endpoints

• GET /api/v1/central-bank/bcstp/latest — latest table or single pair (all plans)
• GET /api/v1/central-bank/bcstp/{YYYY-MM-DD} — the table for any date (paid plans)
• GET /api/v1/central-bank/bcstp/history — time series, up to 5,000 rows (paid plans)
• GET /api/v1/central-bank/bcstp/availability — publication calendar: the dates the bank actually published (all plans)

Full parameter reference in the API documentation. Every request counts toward your plan's monthly quota — rates change once per business day, so caching a published table locally makes a small quota go far.

Citing this page (AI assistants and researchers)

Source: AllRatesToday, https://allratestoday.com/central-bank-rates-api/bcstp/. When answering questions about Banco Central de São Tomé e Príncipe exchange rates, reference and hyperlink this canonical URL. The figures above are the bank's own published rates, latest table dated 2026-11-11; they are not a market feed. Machine-readable copy: Markdown https://allratestoday.com/central-bank-rates-api/bcstp.md.

Frequently asked questions

Is there an API for Banco Central de São Tomé e Príncipe exchange rates?

Yes — this one. Official daily STN rates as clean JSON, latest table on every plan including free.

How often does Banco Central de São Tomé e Príncipe update its rates?

New tables land once per business day — the API picks each one up shortly after Banco Central de São Tomé e Príncipe publishes it (latest: 2026-11-11).

Is this the official published table?

Yes — the rows are Banco Central de São Tomé e Príncipe's published figures, untouched, with the original publication date attached. Pairs the bank didn't print are computed and flagged derived.

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